Which mechanisms do you use?
Both have the same principle in common: They store a key-value pair, which can be used to initiate further action, based on the key existence and/or their respective value.
Example: A contact form has following fields to fill in: name
, sex
, birthday
, email
. You – John Doe, male, born on 06.09.1978 and owning the email address john@doe.com
– fill in the form. Following key-value pairs result from that:
What are the differences between cookies and the Web Storage API?
(Internet, Website or HTTP) cookies are small files (max. 4 KByte) storing data about a user, who has visited the website. These files get saved on your device disk and are accessible by your browser. Next time you visit the same website, your browser also transmits the stored cookie to the server providing the website, which can be processed further by the server.
The Web Storage API in form of sessionStorage
and localStorage
may store larger data (max. 5 MByte). This data cannot be transmitted to the server directly and is intended for local client/user interaction. While sessionStorage
stores data until you close your browser at the latest, localStorage
may store data permanently. Both variants, like cookies, can be deleted and modified via browser tools/settings and JavaScript instructions.
How do we use stored data?
Our website does primarily use first-party cookies, meaning, cookies are not shared with or between third parties. Third-party cookies may be set by base map layer providers. We only use cookies for functionality reasons and do not use them to track you, show targeted content or ads. All cookies are transmitted via secure connections.
Please note, that you have to visit the website with the same browser as before, to make use of custom preferences. Incognito/Private modes do not transmit saved cookies to the server nor save localStorage items either. Below you can see which cookies and Web Storage API items may be used by this website, whether any of them are currently used/saved and what their current value is. You can also delete certain unwanted cookies or Web Storage API items.
About and settings
By default cookies expire after 10 years. Some browsers may restrict expiration dates, which results in earlier expiration.
Settings apply immediately. Some changes require a page reload.
PHPSESSID
Stores several values, holding information about possible error messages, etc. on page load or user interaction. Created by the general-purpose scripting language PHP deployed on the web server running this domain.This cookie cannot be deleted and is technically required.
Item is always set.
Expires after current session, meaning after you close all windows of your browser.
Values of this cookie cannot be altered.
visited
Is set the moment a user closes this notification.
Causes this notification to not show on a subsequent visit.
Item is not set.
Possible value: true
Current value: true
The value of this item cannot be altered.
lang
Saves the language set within site settings by the user.
Deleting this cookie causes the website to follow browser/system preferences.
Item is not set.
Possible values: de
(Deutsch (German)), en
(English)
Current value: de
db-open
Determines whether the dashboard is open or closed.
Deleting this item causes the dashboard to be closed on a subsequent visit.
Item is not set.
Possible value: true
Current value: true
The value of this item cannot be altered.
db-last_section
Saves the last selected section inside the dashboard.
Deleting this item causes the first listed section to be selected on a subsequent visit.
Item is not set.
Possible values: about
, sitesettings
, studyarea
, layers
, styling
, statistics
Current value: about
Select a section within the dashboard to alter the value of this item.
OLMap-layerActive
Saves currently active layers visible on the map.
Deleting this item causes the default layer visibility setting to apply on a subsequent visit.
Item is not set.
Current value: activeLayersInOneStringWithDashSignifyingRelationBetweenGroupAndLayerAndUnderscoreAsDelimiter
Set active layers in the appropriate dashboard section to alter the value of this item.
OLMap-selectedMainAttribute
Saves the last selected attribute/indicator to be displayed.
Deleting this item causes the default attribute/indicator to be displayed on a subsequent visit.
Item is not set.
Current value: G_bivar
Select an indicator/attribute in the appropriate dashboard section to alter the value of this item.
OLMap-mainAttributeColorSchemeCatBiv
Saves the last selected bivariate color scheme for displaying compatible dataset attributes.
Deleting this item causes the default color scheme to apply on a subsequent visit.
Item is not set.
Current value: schemeCatBiv
Select an alternative color scheme in the appropriate dashboard section to alter the value of this item.
OLMap-mainAttributeColorSchemeCatQual
Saves the last selected color scheme for displaying qualitative dataset attributes.
Deleting this item causes the default color scheme to apply on a subsequent visit.
Item is not set.
Current value: schemeCatQual
Select an alternative color scheme in the appropriate dashboard section to alter the value of this item.
OLMap-mainAttributeColorSchemeGradSeq
Saves the last selected sequential color scheme for displaying quantitative dataset attributes.
Deleting this item causes the default color scheme to apply on a subsequent visit.
Item is not set.
Current value: schemeGradSeqSingleHueGreys
Select an alternative color scheme in the appropriate dashboard section to alter the value of this item.
OLMap-mainAttributeColorSchemeGradDiv
Saves the last selected diverging color scheme for displaying quantitative dataset attributes.
Deleting this item causes the default color scheme to apply on a subsequent visit.
Item is not set.
Current value: schemeGradDivBrownBluegreen
Select an alternative color scheme in the appropriate dashboard section to alter the value of this item.
OLMap-customMainAttribute
Saves the currently selected custom attribute/indicator.
This item cannot be deleted and is technically required.
Item is not set.
Current value: custom
The value of this item cannot be altered.
OLMap-customMainAttributeStyleType
Saves the style of a custom attribute/indicator.
This item cannot be deleted and is technically required.
Item is not set.
Current value: gradSeq
The value of this item cannot be altered.
OLMap-customMainAttributeFeatureObject
Saves the values of a custom attribute/indicator.
This item cannot be deleted and is technically required.
Item is not set.
The value of this item cannot be altered.